Chapter 5 The skin is composed of two distinct regions‚ the epidermis and the dermis. These two areas are firmly attached to one another along a wavy borderline. The epidermis (epi = upon) composed of epithelial cells‚ and is the outermost protective shield of the body. Epidermis - Structurally‚ the epidermis is a thick keratinued stratified squamous epithelium consisting of four distinct cell types and five distinct layers. Cells of the Epidermis - Cells populating the epidermis include: keratinocytes
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Lipid Digestion The process of mastication is our only conscious act in the digestion of the foods we consume. After that‚ it’s out of sight‚ out of mind; but should it be? What does it take to transform that last swallow into the energy our body needs to sustain itself? In the case of lipid digestion‚ the real magic occurs throughout the gastrointestinal tract with a synergistic collaboration from the accessory organs: the liver‚ gallbladder and pancreas. Understanding the whole process of digestion
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Alveoli and Blood Capillaries. SIMPLE CUBOIDAL EPITHELIUM The structure of the cuboidal epithelium is a single layer of cube-like cells. They have large single spherical and central nucleus. Have basement membrane. They are found in Thyroid Gland and Surface of Ovaries. SIMPLE COLUMNAR EPITHELIUM The structure of the simple columnar epithelium is a unilayer of column-like cells which are taller than others. They have single spherical nucleus. Have basement membrane. They are found
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Defn:Dengue Haemorrhagic Fever(DHF) are acute febrile diseases transmitted by mosquitoes‚ which occur in the tropics‚ can be life-threatening‚ and are caused by four closely related virus serotypes of the genus Flavivirus‚ family Flaviviridae.It was identified and named in 1779. It is also known as breakbone fever‚ since it can be extremely painful. Causative Agent: . Dengue is transmitted to humans by the Aedes (Stegomyia) aegypti or more rarely the Aedes albopictus mosquito. The mosquitoes that
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snake meat can be sold from USD 16 to 29. Therefore‚ meat could be another product of the snake farm. Snake venom is highly modified saliva that is produced by special glands of certain species of snakes. The gland which secretes the zootoxin is a modification of the parotid salivary gland of other vertebrates‚ and is usually situated on each side of the head below and behind the eye‚ invested in a muscular sheath. It is provided with large alveoli in which the venom
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In this assignment I will explain the physiology of two named body systems in relation to energy metabolism in the body. I will be explaining two body systems these are Respiratory system and Digestive system. Energy According to Wright (2007)‚ we need energy for everything we do. Energy can be found in different forms including chemical energy‚ electrical energy‚ thermal energy‚ radiant energy‚ mechanical energy and nuclear energy. We use energy all the time including when we are sleeping. We
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Practical 3 Investigation of Action of Saliva and Hydrochloric Acid in Two Carbohydrate Solution | Objective: 1. To show the action of saliva in two carbohydrate solutions. 2. To show the action of hydrochloric acid in two carbohydrate solutions. Apparatus & Equipment’s: Boiling tubes Metal test tube racks Beaker Graduated plastic dropper Water bath‚~37°C Water bath‚~95°C Stop watch
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of food into energy and break down the non-nutritive components into waste to be excreted. The mouth Anatomy o Contains the lips‚ cheeks‚ palate‚ tongue‚ teeth‚ salivary glands‚ masticators/facial muscles and bones. o Anteriorly bounded by the lips. Physiology o Important for the mechanical digestion of food o The saliva contains SALIVARY AMYLASE or PTYALIN that starts the INITIAL digestion of carbohydrates The Esophagus Anatomy o A hollow muscular tube o Length - 25cm o Located in the mediastinum
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nervous sys (smooth muscles in digestion‚ glands in sweating) 2) Somatic: involve sensory stimulation that causes skeletal muscles to react (withdrawal reflex from pain) 1 1/3/2013 Components of Reflex Arc 1. Receptor: site of stimulus 2. Sensory neuron: transmits afferent impulse to central nervous system (CNS) 3. Integration center: one or more synapses in CNS 4. Motor neuron: conducts efferent impulse to effector 5. Effector: muscle/glands respond to impulses Monosynaptic
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Checkpoint Chapter 23 1. Give the name and function of each of the four layers if the GI tract. A. mucosa; inner surface for the secretion of digestive end products. B. submucosa: site of glands‚ blood vessels‚ lymph vessels and nerve plexuses. C. muscularis: circular and longitudinal muscles for propulsion and mixing. D. serosa: serous membrane to reduce friction with movement. 2. Where along the GI tract is the muscularis composed of skeletal tissue? Is control of this skeletal muscle‚ voluntary
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